Quantcast Valve Mechanism, Cleaning, Inspection and Repair

 

Click here to make tpub.com your Home Page

Page Title: Valve Mechanism, Cleaning, Inspection and Repair
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Valves must be installed in the same cylinders from which they were removed.
Up
TM-10-3930-630-34 Truck Lift Fork GED Solid Rubber Tired Wheels 4000 lbs Capacity 100 and 180 Inch Lift Manual
Next
Figure 11-5. Insert and counter bore dimensions.
TM 10-3930-630-34
11-4.
Valve Mechanism, Cleaning, Inspection and
Repair
a. Clean parts in cleaning solvent (Fed. Spec. P-
D-680) and dry thoroughly.
b. Remove all carbon and burned oil from valves.
c. Check valves and seats for excessive burning,
cracks and pitting.
d. Check valve guides by inserting valves and
noting amount of side play.
e. Check intake valves as follows:
(1) Stem diameter must be 0.3414 to 0.3406
inch (8.67 to 8.65 mm).
(2) Minimum diameter wear limit is 0.3386
inch (8.60 mm).
(3) Stem clearance limits in valve guide must
be 0.0026 to 0.0008 inch (0.066 to 0.020 mm).
(4) Maximum clearance is 0.0046 inch (0.116
mm).
(5) Desired clearance is 0.0015 inch (0.038
mm).
f. Check exhaust valves as follows:
(1) Stem diameter must be 0.3385 to 0.3377
inch (8.59 to 8.57 mm).
Figure 11-3. Valve guide removal.
(2) Minimum diameter wear limit is 0.3357
inch (8.52 mm).
(3) Stem clearance limits in valve guide must
be 0.0055 to 0.0037 inch (0.139 to 0.093 mm).
(4) Maximum clearance is 0.0075 inch (0.190
mm).
(5) Desired clearance is 0.0045 inch (0.114
mm).
g. Replace valves that do not comply with the
above tolerances.
h. Inspect and repair valve seats as follows:
(1) Inspect  valve  seats  for  cracks  and
damage.
(2) Check all inserts for cracks and damage
and for looseness in mounting.
(3) Measure outside diameter of exhaust
valve insert.
(4) Clean and counterbore the block for a
0.010 inch (0.254 mm) large insert. When machining
counterbore, go deep enough to provide full contact of
the insert.
(5) Figure 11-5 shows standard insert and
counterbore dimensions.
Figure 11-4. Valve seat removal.
(6) Always use an oversize insert as a
replacement.
(7) Insert must be a press fit. Place insert in
a container of dry ice before installing. Use gloves to
remove from ice and install insert to prevent freezing or
burning hands from dry ice.
11-3

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.